Description:
------------
Placing any object within parentheses and attempting to access members of that 
object causes the parser to fail with an error. This makes chaining difficult, 
particularly with clones. 
One would expect that parenthesis should have no effect 
on the identity of the variable or expression they are surrounding, but this 
failure of the parser causes a change in identity to not-an-object.

This was reported as a bug #30533, but was declared NAB with no additional 
reasoning. This is thus a change request.

Test script:
---------------
<?php
$Now = new \DateTime();
$OneSecAgo = (clone $Now)->sub(new \DateInterval("PT1S"));
//Or $OneSecAgo = clone($Now)->sub(new \DateInterval("PT1S"));
//Neither work.
echo $Now->format("c") , "\n" , $OneSecAgo->format("c");

Expected result:
----------------
2013-01-09T17:01:35-08:00
2013-01-09T17:01:34-08:00

Actual result:
--------------
[Wed Jan 09 17:01:35 2013] [error] [client *.*.*.*] PHP Parse error:  syntax 
error, unexpected T_OBJECT_OPERATOR in /var/www/test.php on line 3